在Python中,这段代码是什么意思? Python是否具有递增形式的前缀形式?
app.post("/checkout",isLoggedIn,(req,res)=>{
for(var i=0;i<req.body.order.length;i++){
if(req.body.order[i].itname=="nullified")
req.body.order.splice(i,1);
i=0;
}
var orderpp={
restroname:req.body.restro,
cusname:req.body.custo,
deliveryadd:req.body.loc,
bill:req.body.bill,
items:req.body.order,
deliveryslot:req.body.slot,
payment:req.body.pay,
roomdet:req.body.room
};
console.log(orderpp.items);
Order.create(orderpp,(err,neworder)=>{
if (err) {
req.flash("error",err.message);
res.redirect("/index");
} else {
console.log(neworder);
}
})
})
帖子增量在Python中无效,并且在终端中显示错误。但是前缀增量不会显示错误。那么>>> x=5
>>> ++x
5
>>> print(x)
5
在Python中是什么意思?